Sandvik,SAF 2507

Sandvik SAF 2507 Billet Product Information -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Billet Synonyms -:- For detailed product information, please contact sales. -:

Sandvik SAF 2507 Billet Product Information -:- For detailed product information, please contact sales. -: # **Product Name: Sandvik SAF 2507 Billet (UNS S32750 / EN 1.4410)** ## **Introduction** Sandvik SAF 2507 Billet is a premium-grade, semi-finished super duplex stainless steel product, serving as the critical feedstock for manufacturing components that must survive the most extreme corrosive and mechanical environments. As the foundational material for the industry-leading **SAF 2507® super duplex alloy**, this billet is produced to the highest standards of **internal cleanliness, chemical homogeneity, and microstructural control**. It is engineered specifically for **severe service applications** where the final forged, extruded, or rolled product demands unparalleled resistance to pitting, crevice corrosion, stress corrosion cracking (SCC), and high mechanical strength. ## **Key Features** * **Extreme Performance Foundation:** Provides the essential raw material chemistry and quality to achieve PREN > 40 in the final component, enabling operation in aggressive chloride, sour (H₂S), and acidic services. * **Ultra-High Internal Soundness:** Manufactured using state-of-the-art secondary refining (e.g., AOD/VOD, ESR) to achieve exceptionally low levels of impurities (S, P, O₂) and non-metallic inclusions, which is paramount for the integrity of large, high-stress forgings. * **Optimal Hot Workability:** Despite its high alloy content, the billet is produced with a controlled microstructure to ensure reliable forgeability, extrudability, and ring-rolling characteristics. * **Guaranteed Consistency for Critical Parts:** Full traceability and comprehensive certification ensure that the billet meets the stringent demands of offshore, subsea, and chemical processing industries where component failure is not an option. --- ## **1. Chemical Composition (Typical Weight % - Sandvik Specification)** The billet chemistry is tightly controlled to the strict UNS S32750 specification, ensuring the "super duplex" performance level. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 24.0 - 26.0 | Nickel (Ni) | 6.0 - 8.0 | | Molybdenum (Mo)| 3.0 - 4.0 | **Nitrogen (N)**| **0.24 - 0.32** | | Manganese (Mn) | ≤ 1.2 | Copper (Cu) | ≤ 0.5 | | Silicon (Si) | ≤ 0.8 | Carbon (C) | ≤ 0.030 | | Phosphorus (P) | ≤ 0.035 | Sulfur (S) | ≤ 0.020 | | **Iron (Fe)** | **Balance** | | | **Critical Quality Parameter:** The **high and tightly controlled Nitrogen content** is the key driver for strength and corrosion resistance. Sandvik's process guarantees this critical element is uniformly distributed. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≥ **40** (Typically **41-43**) --- ## **2. Physical & Mechanical Properties (Post-Forging & Heat Treatment)** *Final properties are developed after hot working and a mandatory high-temperature solution anneal and quench.* | Property (After Final Heat Treatment) | Typical Value / Range | | :-------------------------------------------- | :------------------------------ | | Density | 7.8 g/cm³ | | **Tensile Strength (Rm)** | **800 - 1000 MPa** | | **Yield Strength (Rp0.2)** | **≥ 550 MPa** | | **Elongation (A)** | **≥ 15 %** | | Hardness (Brinell) | 270 - 320 HBW | | **Impact Toughness (Charpy V-notch, min.)** | **≥ 70 J at -40°C** | | **Critical Pitting Temp. (CPT) - ASTM G48** | **Typically ≥ 70°C** | **Billet-Specific Quality Indicators:** * **Surface Condition:** Fully conditioned (ground) to remove all surface defects that could propagate during forging. * **Macro-Structure:** Must exhibit a sound, homogeneous structure free from pipes, porosity, and excessive segregation per stringent internal standards. * **Micro-Cleanliness:** Very low inclusion ratings (e.g., thin series per ASTM E45 or equivalent) are essential. --- ## **3. Product Forms & Downstream Applications** **Billet Form:** * **Continuously Cast or Electro-Slag Remelted (ESR) Forged Ingot:** Square or round cross-sections, cut to length. ESR billets are specified for the most critical applications. * **Surface:** Fully ground or peeled. **Primary Downstream Manufacturing Routes & Final Applications:** This billet is destined for the most demanding components across industries: 1. **Open-Die / Closed-Die Forging:** For large, high-integrity parts. * **Applications:** Subsea Christmas tree and manifold blocks, large high-pressure valve bodies (gate, globe, choke), pump casings for seawater injection, forged fittings (ASTM A182 F53). 2. **Ring Rolling:** For large-diameter, high-strength rings. * **Applications:** Pressure vessel flanges, bearing races for corrosive environments, gear blanks for marine drives. 3. **Extrusion / Piercing for Seamless Products:** To manufacture thick-walled, high-pressure seamless pipes (ASTM A790), tubes, and hollows. 4. **Rolling to Large Bar Stock:** For further machining into shafts, pins, and fasteners for severe service. **End-Use Industries:** Oil & Gas (Ultra-Deepwater, HPHT, Sour Service), Chemical & Petrochemical (Aggressive Acids), Offshore & Marine, Power Generation (Advanced FGD), Desalination. --- ## **4. International Standards & Approvals** The billet is the precursor to final products certifiable to the most rigorous international standards. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **S32750** | The definitive super duplex specification. | | **EN / EURONORM (Europe)** | **1.4410** | Standard European material number. | | **ASTM (USA)** | **ASTM A182** (Forgings - F53), **ASTM A276** (Bars), **ASTM A790** (Pipe) | The billet enables certification to these finished product standards. | | **NACE MR0175/ISO 15156** | **Fundamental for Compliance.** The billet's chemistry and cleanliness are prerequisites for manufacturing sour-service-qualified components. | Final qualification requires strict control of the entire manufacturing and heat treatment process. | | **Key Procurement Specification** | **Sandvik SAF 2507 Billet Technical Agreement.** This is **mandatory** and includes stringent requirements for **Ultrasonic Testing (UT), macro-etch, inclusion analysis, and chemical homogeneity**. | Standard MTCs are insufficient; a detailed technical agreement governs procurement for critical applications. | --- ## **Critical Technical & Procurement Note** **SAF 2507 Billet is a high-integrity engineering material for severe service. Its processing demands expert knowledge.** 1. **Procurement Focus - Quality Assurance:** The purchase specification must be exhaustive. Key requirements include: * **Melting Route:** Specify AOD/VOD or, for maximum quality, **Electro-Slag Remelting (ESR)**. * **Non-Destructive Testing (NDT):** 100% Ultrasonic Testing (UT) to advanced standards (e.g., API 6A, SEP 1921, Class EE or better) for internal discontinuities. * **Macro/Micro Examination:** Strict limits on center porosity, segregation, and inclusion counts/sizes. 2. **Thermomechanical Processing:** Hot working must be performed within a **strict temperature window** to avoid the formation of detrimental intermetallic phases (sigma, chi). This is followed by a **mandatory high-temperature solution anneal** (typically 1120-1170°C) and rapid quench to achieve the correct ferrite-austenite balance and corrosion resistance. 3. **Welding & Fabrication of Final Component:** Welding of finished parts is highly critical and requires over-matching filler metals (e.g., ER2594) and qualified procedures. This billet's quality provides the best possible base material for such operations. 4. **Certification & Traceability:** Demand a **comprehensive Sandvik Certificate** including full chemical analysis (ladle and product), gas contents, inclusion rating reports, UT reports, and macro-etch photos. Full **heat-to-heat traceability** through all manufacturing steps is non-negotiable. -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Billet Specification Dimensions Size： Diameter 20-1000 mm Length <7293 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: Sandvik SAF 2507 Billet Properties -:- For detailed product information, please contact sales. -:

Applications of Sandvik SAF 2507 Billet -:- For detailed product information, please contact sales. -: Chemical Identifiers Sandvik SAF 2507 Billet -:- For detailed product information, please contact sales. -:

Packing of Sandvik SAF 2507 Billet -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Sheet/Plate drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3764 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition